Target (10F5): 8B29CBA9C1F98D84
Hit (10F3): C643C8E32E33C473
It looks like the guide was wrong, and that we're supposed to begin looking for the spinner sequence at the starting frame, not the frame after. I was able to find my adjacent seed spinners using this method, so now it's just a matter of me hitting my seed again so I can make sure.
Also, the nature frame was on 75, which was 19 away from the starting frame. According to the guide, it should have been 20 away. Again, I will check this with the Riolu I get when I hit my seed.
Edit: And we have SUCCESS!
The PID frame for this one was 19 away from the starting frame, too. I'm not sure how this will factor into legendaries, but at least we've got the seed confirmation working now.